Telephone-instrument signaling



July 22, 1930. J O cADlEUX 1,771,324

TELEPHONE INSTRUMENT SIGNALING Filed April 29, 1929 Patented July 22, 1930 UNITED- STATE PATENT OFFICE- .rosnrn o. OADIEUX, on mEnnJEN, connno'rrcur, 'ASSIGNOR, BY MEsNE nssremrmir'rs, To CONNECTICUT r'ELErHoNE & ELECTRIC oonrona-rron, or MERIDEN, coNNEcrr- GUT, A OORIPORA TIOQN OF DELAWARE 'rELErEonE-msTEumENT SIGNALING Application filed April 29, 1929. Serial No. 359,123.

My invention relates generally to telephones and more particularly to such constructions adapted for' use in apartment houses and the like. The present invention is specifically concerned with the. telephone transmitter and signaling device and this application is a partial continuation of my co.- -pending application Ser. No. 282,102, issued June 11, 1929, as Patent No. 1,717,090, with respect to these features. 7 Y

' One'object is to provide a compact, simple and reliable construction which may be embodied in various attractive designs. Another object is to facilitate construction, assembly and installation. 7

Another object is to conceal and protect the transmitter. i

Another object is to increase the eificiency of the signaling bell' or buzzer. 7

Another object is to securev maximum sensitivity of the transmitter.

In the preferred form the apparatus comprises a casing or housing composed of two parts, namely, a back plate 'or wall member 2 adapted to be secured to the wall and a front plate which supports all .the rest of the mechanism and is removable from the back plate. One of these plates, preferably the front plate, has a peripheral flange removably con nected to the otherplate and laterally surrounding the trans'm1t-ter,'vibrator and electrical connections. s Fig. 1 is a rear view of the part-of a telephone instrument embodyin my invention,

withtherear plate remove p i Fig. 2 is a vertical transverse sectional view h v of the same but also showing the back plate.

Fig. 3 is a mechanism. I

Fig. 4 is a horizontal sectional view showing the vibrator and its support.

The front plate 5 of'the casing is preferably ,formed of moldedv insulation and is -adapted to be secured to the'back plate 6 preferably by telescoping stud and screw 0011-, nections 7.' The peripheralflange 8 is pref- 'erably integral with the front plate and surrounds all of the-interior mechanism and connections. The front plate preferably has perspective view of the vibrator t a flange 9 corresponding to the mouthpiece of a transmitter arid one or more openings '10 leading to the interior..

The diaphragm 11 may be of any suitable construction .and is positioned within the flange 12 which projects rearwardly from the front late around the openings 10. The microp onic device 13 of any suitable construction is connected at its front end with the diaphragm and is supported at the rear by a cross bar 14 which in turn is secured to the flange 12, for'instance, by screws 15 at opposite ends. The diaphragm may be yieldingly held in place by spring fingers 16 and 17 which are supported on the flange 12.

Electrical connection to-the diaphragm and microphonic-device maybe attained by means of conductor strips 18 and 19.

A si cured, or instance, by screws 21--to the cross bar 14 and its edge surrounds the flange 12 so that the bell substantially encloses the diaphr'agm 11 and the microphonic device 13 and thus serves to increase the sensitivity of the transmitter and at the same time produce a maximum loudness of signal of the-buzzer or bell as it will be herein termed. It is immaterial to the present invention whether the bell has a musical tone or merely constitutes a noise making device The vibrator consists of an electromagnet 22 with a hammer member23. .and suitable al bell. or buzzer member 20 is secontact mechanism. One head of the coil is a secured to the front plate by a screw 24. The

'other head of the coil is integral with the arm 25 which serves as a circuit connection and has a terminal binding screw 26.-

The other connection for the coil is from the binding screw 27. These two terminals are arranged alongside of each other and supported in a row on the transverse flange 28 which also supports the connections to the other elements of the device, such as the is supported by a plate which 'is secured to a stud 36' embedded or otherwise suitably secured in the rear of the face plate of the casing. a

Itwill be seen from the foregoing that the construction is simple and compact and thatv may be used and other details may be varied within the spirit of my invention.

7 I claim:

1. A telephone comprising a casing having an insulating body, a diaphragm and a microphonic device mounted therein, a signal bell having a flange surrounding said microphonic device and a vibrator for said bell.

2. A telephone comprising a casing having an insulating body with a flange at its rear, a transmitter mounted therein, a signal bell having its rim surroundingsaid flange and a vibrator for said bell. a

' 3, A telephone comprising a casing, a diaphragm and a microphonic device'mounted therein,-a signal bell having a flange surrounding said microphonic device and a vi-' brator for said bell all within said casing.

4. A telephone construction comprising a casing formed of insulating material and having afront wall with an opening and a I I having a sound openin and a rearward pro rearwardly extending flange, a diaphragm supported within said flange, a signal bell having an edge adjacent said flange and a vibrator coacting with said bell.

5. A telephone construction comprising a casing having a front wall with an opening, arearwardly projecting peripheral flange,

front wall, a circular exterior as n and a microphonic device behind the open ing, a signal bell having an edge surrounding coil mounted side by side on the rear of said Well, one of said terminals supporting said coil. I

,8. In a telephone, a casingfinclltdinlg-a y pro ru mg flange on said wall disposed centrally thereof 'formin a mouthpiece, a circular interiorl protru mg flange on said wall concentri- I cally arranged relative to said exterior flange,

a diaphra' m positioned within said interior flan ean s rin members, for yieldingly hol ing said iap agm in position.

9. In a telephone instrument, a casing having a sound opening in the front and a flange projecting rearwardly around said opening, a cross bar supported on said flange and-a signal bell detachably mounted on said her substantially concentric with'said flange and a Vibrator within the casing and coacting with the bell.

10. -A telephone instrument comprising an insulating casing having a peripheral rear flange and a sound opening in the front of the .casing,across bar detachably mounted within the casing, a bell supported on said bar behind said opening and a vibrator supported transmitter and a bell supported on said cross bar within the casing behind said opening,

casing.

12. In a telephone instrument, a casing jecting flange, a cross ar supported on said in the casing between said flange and said and means for sounding the bell within the detachably-supported by said cross bar and connected to said diaphragm JOSEPH o. CADIEUX."

within the the microphonic device and a vibrator for the bell located within said peripheral flange.

6. A telephone construction comprising a casing having a front wall with an opening,

a rearwardly projecting flange a diaphragm supported within said flange behind said Opening, a microphonic device supported by said flange and connected to'said diaphragm,

a signal bell surrounding said microphonic device, a vibrator supportedat the rear of the wall adjacent'the bell and including a 10s flange, a diaphragm mounted within said flange behind said opening, and a microphone, 

